[Koha] Email not appearing

hi my friends I using and managing koha for sending overdue notice email and checkout and check in but when i go to administrator mail send i don't found the massage that's i send and also patron check email the massage not send to, but when i go to patron notice i check notice tell me sent how solve this i before install koha 3.18.6 on ubuntu 12.04 i want how solve urgent Ahmad Nasser koha system administrator future university in Egypt -- View this message in context: http://koha.1045719.n5.nabble.com/Email-not-appearing-tp5918006.html Sent from the Koha-general mailing list archive at Nabble.com.